Visit theVPN Guides Hubas well andget the latest tips to maximize the use of your virtual private connection.

Error 734 occurs for some users who try to utilize their VPNs with PPP dial-up connections. The full error message states, Error 734: The PPP link control protocol was terminated. Consequently, no VPN connection can be established.

That error can often be due to a misconfigured PPP dial-up connection. Below are a few Windows resolutions that might fix error 734 for most users.

2. Install Private Internet Access

Speaking about Windows 10 compatible VPN clients, you might want to consider an upgrade over your current tool.

PIA VPN is optimized for Windows 10 running devices and can handle PPP dial-up connections easily. It also supports other security protocols such as Wireguard, OpenVPN, and L2TP/IPSec in addition to the PPTP protocol.

By matching your PC with PIA, you will enjoy unlimited bandwidth, fast download speeds, reliable connections to over 3292 servers with global coverage as well as extreme privacy and enhanced security.

Private Internet Access

Classics never go out of fashion. Don't ditch your dial-up connection, enhance it with PIA instead!

3. Select the Allow Unsecured Password option

The Error 734 error message also pops up when unsecured passwords aren’t enabled. Thus, selecting the Allow unsecured password option is another potential resolution (for XP users). This is how XP users can select that option.

Open the Start menu, and select Settings > Network and Dial-up Connections.

Then right-click the dial-up connection you need and select the Properties option.

Then select the Security tab, which includes a Validate my identity as follows drop-down menu.

A dialog box opens that asks users if they want to back up their registries. Select Yes to back up the registry if you prefer, and then click Save on the Save As window.

Thereafter, press the Fix All Selected Issues button to repair all the issues.

6. Switch off Windows Defender Firewall

In addition, switch off the Windows Defender Firewall to ensure that it isn’t blocking connections. Users can do that in all Windows platforms by entering firewall.cpl in Run’s Open text box.

Click Turn Windows Defender Firewall on or off to open the firewall settings below.

Click both the Turn off Windows Defender Firewall radio buttons to switch off WDF.

Press the OK button to exit.

So, error 734 is more of a dial-up connection error than a VPN issue. These solutions might help you fix it so that you can utilize your VPN with PPTP.

Let us know how it worked for you in the comments section below.

FAQ: Learn more about protocols and VPNs

How do I fix PPP link control protocol was terminated?

The official resolution provided by Microsoft is to disable multi-link for single link connections. To do this, open the Control Panel and right-click the dial-up connection. Then, select Properties->Options->PPP and uncheck the Negotiate multi-link for single link connections option.

Is dial up secure?

It is as secure as other types of connections such as ADSL, Ethernet cable, and so on. Pairing it with a VPN tool optimized to support this protocol such as PIA can improve the speed of your connection and enhance your online security.

What is the best protocol for VPN?

The open-source OpenVPN is the fastest and most flexible protocol, thus the preferred choice for VPN routed connections. Nevertheless, most premium VPNs support a wider range of protocols with decent performances.

Editor’s Note: This post was originally published in December 2018 and has been since revamped and updated in May 2020 for freshness, accuracy, and comprehensiveness.